Tearing down DMA transfer setup after DMA client has finished

[Måns Rullgård]

Vinod Koul <vinod.koul at intel.com> writes:

> On Tue, Dec 06, 2016 at 01:14:20PM +0000, Måns Rullgård wrote:
>> 
>> That's not going to work very well.  Device drivers typically request
>> dma channels in their probe functions or when the device is opened.
>> This means that reserving one of the few channels there will inevitably
>> make some other device fail to operate.
>
> No that doesnt make sense at all, you should get a channel only when you
> want to use it and not in probe!

Tell that to just about every single driver ever written.

-- 
Måns Rullgård